9 Troubleshooting NICE3000
new
User Manual
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Chapter 9 Troubleshooting
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Safety Information
Do not wire the controller while the power is on, and keep all circuit breakers in OFF state. Failure to comply
may result in electric shock.
● Make sure to ground the controller according to local laws and regulations. Failure to comply may result in
electric shock or a re.
● Never remove the protective cover or touch the internal circuit while the power is on. Failure to comply
may result in electric shock.
● Never allow unqualied personnel to perform any maintenance, inspection or part replacement work.
● When installing the controller inside the enclosed cabinet, use the cooling fan or air conditioner to keep the
air inlet temperature below 50°C. Failure to comply may result in overheating or even a re.
● Tighten all screws based on the stated tightening torque. Failure to comply may result in electric shock or
a re.
● Always conrm the input voltage is within the nameplate rating. Failure to comply may result in electric
shock or a re.
● Keep ammable and combustible materials away from the controller.
● Never transporting the controller by carrying the front cover. Otherwise, the main body of the controller
may fall off, resulting in personal injury.
● Always handle the controller with care.
● Do not use the controller if there are damaged or missing parts.
● Cover the top of the controller with a temporary cloth or paper during installation so as to prevent foreign
matter such as metal shavings, oil and water from falling into the controller. After the installation is
completed, remove the temporary cloth or paper.
● Follow the proper electrostatic discharge (ESD) procedures when operating the controller. Failure to
comply will damage the internal circuit of the controller.
9.1 Description of Fault Levels
The NICE3000
new
has almost 60 pieces of alarm information and protective functions. It monitors various
input signals, running conditions and feedback signals. If a fault occurs, the system implements the
relevant protective function and displays the fault code.
The controller is a complicated electronic control system and the displayed fault information is graded into
ve levels according to the severity. The faults of different levels are handled according to the following
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